CN201651115U - Overrun clutch - Google Patents
Overrun clutch Download PDFInfo
- Publication number
- CN201651115U CN201651115U CN2010200010195U CN201020001019U CN201651115U CN 201651115 U CN201651115 U CN 201651115U CN 2010200010195 U CN2010200010195 U CN 2010200010195U CN 201020001019 U CN201020001019 U CN 201020001019U CN 201651115 U CN201651115 U CN 201651115U
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- CN
- China
- Prior art keywords
- ratchet
- wheel
- ratchet wheel
- pawls
- ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
Abstract
The utility model discloses an overrun clutch comprising a first shaft and a second shaft, wherein the first shaft is coupled with a ratchet wheel; the second shaft is coupled with a ring-shaped wheel arranged outside the ratchet wheel; the ring-shaped wheel, along the circumference of the inner ring thereof, is equally provided with a plurality of pits; each pit is internally hinged with a pawl; and the pawls are arranged at two ends of the pawls, within the hinging and rotating scope of the pawls and the pits, wherein one ends of the pawls lead the pawls to be contracted in the pits completely and not to be contacted with the ratchet wheel completely, and simultaneously, torque transmission is not conducted between the ratchet wheel and the ring-shaped wheel, and the other end thereof lead the ratchet wheel to be clamped in ratchets of the ratchet wheel completely, and simultaneously, the torque transmission is conducted between the ratchet wheel and the ring-shaped wheel. The overrun clutch has simple structure, when the torque transmission is not conducted and as the ratchets can not be attached with the ratchet wheel tightly, greatly reduces the wearing of parts in overrun clutch, prolongs the service life of the overrun clutch, and also has the function of limiting speed.
Description
Technical field
The utility model relates to a kind of clutch, especially a kind of free wheel device.
Background technique
Existing overrun, generally all be to adopt ratchet and ratchet to cooperatively interact, when making secondary speed greater than the rotating speed of driving wheel, ratchet and ratchet break away from, relative movement takes place between follower and the driving wheel, and when secondary speed was reduced to the rotating speed of driving wheel, ratchet embedded ratchet, and driving wheel drives follower and rotates.
Publication number is in the Chinese patent application open file of CN1940331A, has put down in writing a kind of free wheel device.It comprises the lobe plate that is positioned at the outer ring, and this lobe plate is provided with inside ratchet, is provided with the swinging block plate in the described lobe plate, this swinging block plate is provided with swinging block, swinging block and described swinging block plate are hinged, and by the below that a spring withstands the swinging block plate, make swinging block engage on ratchet.In this structure and since spring constantly all with the swinging block top to ratchet one side, therefore in transmitting torque not, still can have sliding friction between swinging block and the ratchet, not only can cause the loss of rotational velocity, also can increase the wearing and tearing of swinging block.And in the disclosed technological scheme of this document, rotating speed is fast more, and swinging block is owing to action of centrifugal force, just in the tight more engaging and ratchet.If under fast state, follower makes that then the wearing and tearing of swinging block are just more serious by not transmitting torque owing to rotating speed makes between lobe plate and the swinging block plate greater than driving wheel, has influenced the working life of free wheel device greatly.In addition, this structure in this patent publication is more complicated also, and the spring under the swinging block is easy to break down, and changes after breaking down and maintenance unusual inconvenience all.
The model utility content
Technical problem to be solved in the utility model provides a kind of free wheel device, can adopt simple structure, reduces the parts depreciation in the free wheel device greatly, prolongs the life-span of free wheel device, and makes free wheel device have the function of speed limit.
For solving the problems of the technologies described above, the technological scheme of the utility model free wheel device is, comprise first and second, go up ratchet of connection for described first, described second one of connection is arranged at described ratchet outer ring wheel, described annulus wheel on average is provided with a plurality of depressions along the circumference of its inner ring, be hinged with ratchet in each depression, the two ends of described ratchet within the scope of itself and the hinged rotation of described depression, one end is contracted in the described depression described ratchet fully, and can not contact with ratchet fully, there is not the moment of torsion transmission between ratchet and the annulus wheel this moment; The other end is sticked in the ratchet of described ratchet described ratchet fully, and carry out moment of torsion transmission between ratchet and the annulus wheel this moment.
As the further improvement to the utility model free wheel device be, described first is driving shaft, and described second is driven shaft.
The utility model is simple in structure, because ratchet can be close to ratchet, greatly reduce the parts depreciation in the free wheel device, and has prolonged the life-span of free wheel device when transmitting torque not, also makes free wheel device have the function of speed limit.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the side cutaway view of the utility model free wheel device;
Fig. 2 is the orthogonal view of the utility model free wheel device;
Schematic representation when Fig. 3 is in the transmitting torque state for ratchet in the utility model free wheel device;
Schematic representation when Fig. 4 is in transmitting torque state not for ratchet in the utility model free wheel device;
Schematic representation when Fig. 5 is in the speed limit state for ratchet in the utility model free wheel device.
Reference character is among the figure, 1. first; 2. annulus wheel; 3. second; 4. ratchet; 5. cave in; 6. ratchet.
Embodiment
The utility model discloses a kind of free wheel device, as depicted in figs. 1 and 2, comprise first 1 and second 3, connect a ratchet 6 on described first 1, described second 3 one of connection is arranged at described ratchet 6 outer rings wheel 2, described annulus wheel 2 on average is provided with a plurality of depressions 5 along the circumference of its inner ring, be hinged with ratchet 4 in each depression 5, the two ends of described ratchet 4 within the scope of itself and the 5 hinged rotations of described depression, one end is contracted in the described depression 5 described ratchet 4 fully, and can not contact with ratchet 6 fully, there is not the moment of torsion transmission between ratchet 6 and the annulus wheel 2 this moment; The other end is sticked in the ratchet of described ratchet 6 described ratchet 4 fully, and carry out moment of torsion transmission between ratchet 6 and the annulus wheel 2 this moment.
The number of depressions of described follower is no less than 3.
In the moment of torsion transmittance process, have at least part ratchet 4 to be engaged in the ratchet of ratchet 6, thereby between ratchet and annulus wheel, just do not have the transmission that moment of torsion is finished in relative movement like this because of gravity.In transmitting torque not, ratchet 4 will be thrown off from the ratchet of ratchet 6 and is in free state, and compared with prior art, owing to there is not elastic member, so ratchet 4 can not be close to ratchet 6, reduced the wearing and tearing between ratchet 4 and the ratchet 6 greatly.
In the utility model, can adopt second as driving shaft, first as driven shaft, and among the embodiment as shown in Figure 2, second drives ratchet by annulus wheel and rotate along clockwise direction.
Perhaps, first is driving shaft, and second is driven shaft.In the embodiment shown in Figure 2, first drives annulus wheel by ratchet and rotates in the counterclockwise direction.
Adopt first as driving shaft, can also make the function that the utlity model has speed limit.As Fig. 2 and Fig. 3, Fig. 4, shown in Figure 5, in the time of transmitting torque, the ratchet state is engaged in the ratchet of ratchet as shown in Figure 3.When the rotating speed of annulus wheel during greater than the rotating speed of ratchet, ratchet is just thrown off from ratchet, is in free state, as shown in Figure 4, this moment ratchet no longer transmitting torque give annulus wheel.And no matter whether be in the state of transmitting torque, and when the rotation of annulus wheel reaches a certain speed, can make ratchet because action of centrifugal force and being contracted in fully in the depression of annulus wheel, as shown in Figure 5, at this moment ratchet is just no longer to the annulus wheel transmitting torque.Like this, the utility model has just had the function of speed limit, makes the rotating speed of annulus wheel can not surpass this critical value.
In sum, the utility model is simple in structure, because ratchet can be close to ratchet, greatly reduce the parts depreciation in the free wheel device, and has prolonged the life-span of free wheel device when transmitting torque not, also makes free wheel device have the function of speed limit.
Claims (3)
1. free wheel device, it is characterized in that, comprise first and second, go up ratchet of connection for described first, described second one of connection is arranged at described ratchet outer ring wheel, described annulus wheel on average is provided with a plurality of depressions along the circumference of its inner ring, be hinged with ratchet in each depression, the two ends of described ratchet within the scope of itself and the hinged rotation of described depression, one end is contracted in the described depression described ratchet fully, and can not contact with ratchet fully, there is not the moment of torsion transmission between ratchet and the annulus wheel this moment; The other end is sticked in the ratchet of described ratchet described ratchet fully, and carry out moment of torsion transmission between ratchet and the annulus wheel this moment.
2. free wheel device according to claim 1 is characterized in that, the number of depressions of described follower is no less than 3.
3. free wheel device according to claim 1 is characterized in that, described first is driving shaft, and described second is driven shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010195U CN201651115U (en) | 2010-01-18 | 2010-01-18 | Overrun clutch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200010195U CN201651115U (en) | 2010-01-18 | 2010-01-18 | Overrun clutch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201651115U true CN201651115U (en) | 2010-11-24 |
Family
ID=43116350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200010195U Expired - Fee Related CN201651115U (en) | 2010-01-18 | 2010-01-18 | Overrun clutch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201651115U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276026A (en) * | 2015-12-02 | 2016-01-27 | 傅元才 | One-way overrunning clutch structure, two-gear variable-speed system and control method |
| CN106545598A (en) * | 2016-12-21 | 2017-03-29 | 宁波市镇海捷登应用技术研究所 | A kind of freewheel clutch |
-
2010
- 2010-01-18 CN CN2010200010195U patent/CN201651115U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105276026A (en) * | 2015-12-02 | 2016-01-27 | 傅元才 | One-way overrunning clutch structure, two-gear variable-speed system and control method |
| CN106545598A (en) * | 2016-12-21 | 2017-03-29 | 宁波市镇海捷登应用技术研究所 | A kind of freewheel clutch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI FOREVOO WINDPOWER TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHANG YUNLONG Effective date: 20110914 Owner name: SHANGHAI FOREVOO ENERGY EQUIPMENT CO., LTD. ZHANG Free format text: FORMER OWNER: SHANGHAI FOREVOO ENERGY EQUIPMENT CO., LTD. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200030 XUHUI, SHANGHAI TO: 201315 PUDONG NEW AREA, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110914 Address after: 8, 1, 201315 East Cambridge Road, Shanghai, Pudong New Area Co-patentee after: Shanghai Forevoo Windpower Technology Co.,Ltd. Patentee after: Zhang Yunlong Co-patentee after: Zhang Yunlong Address before: 200030, No. 128, Hongqiao Road, Shanghai, Xuhui District, 6 1F Co-patentee before: Shanghai Forevoo Windpower Technology Co.,Ltd. Patentee before: Zhang Yunlong |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20150118 |
|
| EXPY | Termination of patent right or utility model |